![]() The extreme heat generated by slippage will damage the flywheel and pressure plate faces.Ī grabbing or chattering clutch will produce a very severe vibration or jerking motion when the vehicle is accelerated from a standstill. Never let a clutch slip for more than a second or two. Partial clutch slippage could let the engine run momentarily before stalling. A badly slipping clutch may allow the engine to run, even with the clutch pedal fully released. A clutch in good condition should lock up and immediately kill the engine. Then try to drive the vehicle forward by slowly releasing the clutch pedal. Place the transmission or transaxle in high gear. TO TEST the clutch for slippage, set the emergency brake and start the engine. Internal clutch problems, such as weak springs and bent or improperly adjusted release levers, will prevent the pressure plate from applying even pressure. You have to remove the transmission and clutch components for further inspection. If clutch slippage is NOT caused by a problem with the clutch release mechanism, then the trouble is normally inside the clutch. When this occurs, locate and stop any leakage, thoroughly clean the clutch components, and replace the clutch disc. Grease and oil on the disc will also cause slippage. Under load, the engine can lift up in the engine compartment, shifting the clutch linkage and pushing on the release fork. A broken motor mount (engine mount) can cause clutch slippage by allowing the engine to move, binding the clutch linkage. Wiggle the release fork to check for free play. Inspect the release mechanism for rusted, bent, misaligned, sticking, or damaged components. Binding linkage prevents the pressure plate from exerting its full pressure against the disc, allowing it to slip. When in doubt whether the disc is worn excessively, remove the inspection cover on the clutch housing and visually inspect the disc. Other linkages will allow for adjustment after the disc is worn out. This prevents damage to the flywheel and pressure plate by the rivets wearing grooves in their smooth surfaces. Some clutch linkages are designed to allow only enough adjustment to compensate for the lining to wear close to the rivet heads. Even with your foot off the pedal, the release mechanism will act on the clutch fork and release bearing. Improper clutch adjustment can cause slippage by keeping the release bearing in contact with the pressure plate in the released position. Normal wear of the clutch lining causes the free travel of the clutch linkage to decrease, creating the need for adjustment. Slight but continuous slippage may go unnoticed until the clutch facings are ruined by excessive temperature caused by friction. If clutch slippage is severe, the engine speed will rise rapidly on acceleration, while the vehicle gradually increases in speed. This condition results whenever the clutch pressure plate fails to hold the disc tight against the face of the flywheel. Slipping occurs when the driven disc fails to rotate at the same speed as the driving members when the clutch is fully engaged. It is important to know the symptoms produced by these problems and the parts that might be the cause. There are five types of clutch problems?slipping, grabbing, dragging, abnormal noises, and vibration. Use this information, your knowledge of clutch principles, and a service manual- troubleshooting chart to determine which components are faulty. Gather as much information as you can on the operation of the clutch. ![]() While the vehicle is being test-driven, you should check the action of the clutch pedal, listen for unusual noises, and feel for clutch pedal vibrations. When a vehicle enters the shop for clutch troubles, you should test-drive the vehicle. For instance, "riding the clutch" (overslipping clutch upon acceleration), resting your foot on the clutch pedal while driving, and other driving errors can cause early clutch failure. ![]() Operator abuse commonly causes premature clutch troubles. Everytime a clutch is engaged, the clutch disc and other components are subjected to considerable heat, friction, and wear. ![]() However, stop and go traffic will wear out a clutch quicker than highway driving. Partial clutch slippage could let the engine run momentarily before stallingĪn automotive clutch normally provides depend- able service for thousands of miles. To test the clutch for slippage, set the emergency brake and start the engine. Normaly the RPM would shoot up but the car does not. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |